ST. PETERSBURG, Fla. – Led by the American League’s leading hitter, Amed Rosario, four players the Rays acquired via trade or free agency in the offseason have combined to save the lineup through the first 24 games. The Rays (12-12) enter Tuesday night’s game against Detroit hitting .242 as a team. Believe it or not, that is in the top half (14th) of MLB. It is the quartet of Rosario, Jose Caballero, Richie Palacios and Ben Rortvedt that has been carrying the weight as they are hitting a combined .318. “The guys that we have acquired in the offseason have really helped us,” said manager Kevin …